3. A real or predial servitude is a charge laid on an estate for the use and utility of another estate belonging to another proprietor. Louis. Code, art. 643. When used without any adjunct, the word servitude means a real or predial servitude. Lois des Bat. P. 1, c. 1.

4. The subjection of one person to another is a purely personal servitude; if it exists in the right of property which a person exercises over another, it is slavery. When the subjection of one person to another is not slavery, it consists simply in the right of requiring of another what he is bound to do, or not to do; this right arises from all kinds of contracts or quasi con tracts. Lois des Bat. P. 1, c. 1, art. 1.

6. Real servitudes are divided into rural and urban. Rural servitudes are those which are due by an estate to another estate, such as the right of passage over the serving estate, or that which owes the servitude, or to draw water from it, or to water cattle there, or to take coal, lime and wood from it, and the like. Urban servitudes are those which are established over a building fur the convenience of another, such as the right of resting the joists in the wall of the serving building, of opening windows which overlook the serving estate, and the like. Dict. de Jurisp. tit. Servitudes. See, generally, Lois des Bat. Part 1 Louis. Code, tit. 4; Code Civil, B. 2, tit. 4; This Dict. tit. Ancient Lights; Easements; Ways; Lalaure, Des Servitudes, passim.